如何使用特定的投影名称从服务/控制器调用Spring数据存储库方法？

public interface UserRepository extends JpaRepository<User, Long> {
    @Query(value = "SELECT u.name AS name, u.email AS email FROM User u WHERE u.username = :username")
    UserProjection findUserProjectionByUsername(@Param("username") String username);
}

public interface UserProjection {
    String getName();
    String getEmail();
}

@Service
public class UserService {
    private final UserRepository userRepository;

    public UserService(UserRepository userRepository) {
        this.userRepository = userRepository;
    }

    public UserProjection getUserProjectionByUsername(String username) {
        return userRepository.findUserProjectionByUsername(username);
    }
}

@RestController
public class UserController {
    private final UserService userService;

    public UserController(UserService userService) {
        this.userService = userService;
    }

    @GetMapping("/users/{username}")
    public UserProjection getUserProjectionByUsername(@PathVariable String username) {
        return userService.getUserProjectionByUsername(username);
    }
}